Wolframite

Wolframite is a type of ore. It is not a single mineral, but a solid solution of hübnerite (manganese(II) tungstate, ) and ferberite (iron(II) tungstate, ). Wolframite is one of two main ores of tungsten. The other is scheelite.

It is a black or brown mineral.

Category:Oxide minerals
Category:Ores
Category:Tungsten compounds